From 263f7d61a4201cde16849b2d016251806e7418be Mon Sep 17 00:00:00 2001 From: Fan Wu Date: Thu, 20 Aug 2026 13:53:06 +0000 Subject: usb: typec: qcom-pmic-typec: disable cc_debounce_dwork on stop cc_debounce_dwork is queued from the set_cc() and start_toggling() callbacks, which run from TCPM's kthread worker. port_stop() returns before tcpm_unregister_port() destroys that worker. Flushing the worker during unregister may therefore run a callback which queues the delayed work after port_stop() has returned. The delayed work can then run after devres has freed pmic_typec_port. Use disable_delayed_work_sync() in port_stop() to cancel a pending instance and prevent the TCPM callbacks from queueing another one. This issue was found by an in-house static analysis tool. Fixes: a4422ff22142 ("usb: typec: qcom: Add Qualcomm PMIC Type-C driver") Cc: stable # v6.10+ Assisted-by: Codex:gpt-5.6 Signed-off-by: Fan Wu Acked-by: Heikki Krogerus Link: https://patch.msgid.link/20260820135307.153773-2-fanwu01@zju.edu.cn Signed-off-by: Greg Kroah-Hartman --- include/asm-generic/pgtable_uffd.h | 83 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 include/asm-generic/pgtable_uffd.h (limited to 'include/asm-generic/pgtable_uffd.h') diff --git a/include/asm-generic/pgtable_uffd.h b/include/asm-generic/pgtable_uffd.h new file mode 100644 index 000000000..30e88fc1d --- /dev/null +++ b/include/asm-generic/pgtable_uffd.h @@ -0,0 +1,83 @@ +#ifndef _ASM_GENERIC_PGTABLE_UFFD_H +#define _ASM_GENERIC_PGTABLE_UFFD_H + +/* + * Some platforms can customize the uffd PTE bit, making it unavailable + * even if the architecture provides the resource. + * Adding this API allows architectures to add their own checks for the + * devices on which the kernel is running. + * Note: When overriding it, please make sure the + * CONFIG_HAVE_ARCH_USERFAULTFD_WP is part of this macro. + */ +#ifndef pgtable_supports_uffd +#define pgtable_supports_uffd() IS_ENABLED(CONFIG_HAVE_ARCH_USERFAULTFD_WP) +#endif + +static inline bool uffd_supports_wp_marker(void) +{ + return pgtable_supports_uffd() && IS_ENABLED(CONFIG_PTE_MARKER_UFFD_WP); +} + +#ifndef CONFIG_HAVE_ARCH_USERFAULTFD_WP +static __always_inline int pte_uffd(pte_t pte) +{ + return 0; +} + +static __always_inline int pmd_uffd(pmd_t pmd) +{ + return 0; +} + +static __always_inline pte_t pte_mkuffd(pte_t pte) +{ + return pte; +} + +static __always_inline pmd_t pmd_mkuffd(pmd_t pmd) +{ + return pmd; +} + +static __always_inline pte_t pte_clear_uffd(pte_t pte) +{ + return pte; +} + +static __always_inline pmd_t pmd_clear_uffd(pmd_t pmd) +{ + return pmd; +} + +static __always_inline pte_t pte_swp_mkuffd(pte_t pte) +{ + return pte; +} + +static __always_inline int pte_swp_uffd(pte_t pte) +{ + return 0; +} + +static __always_inline pte_t pte_swp_clear_uffd(pte_t pte) +{ + return pte; +} + +static inline pmd_t pmd_swp_mkuffd(pmd_t pmd) +{ + return pmd; +} + +static inline int pmd_swp_uffd(pmd_t pmd) +{ + return 0; +} + +static inline pmd_t pmd_swp_clear_uffd(pmd_t pmd) +{ + return pmd; +} +#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */ + +#endif /* _ASM_GENERIC_PGTABLE_UFFD_H */ -- cgit v1.3.1